我试图在提交“type:pelicula”帖子之前发送一封电子邮件，但它没有进入功能post_published_notification, 代码如下：

<?php

/**
* Plugin Name: VRlife Alertas Publicaciones
* Description: Avisa por el correo configurado al publicar un nuevo video
* Version: 1.0.0
* Author: José Manuel Lascasas
**/

//1
class MySettingsPage
{

    /**
     * Holds the values to be used in the fields callbacks
     */
    private $options;

    /**
     * Start up
     */
    public function __construct()
    {
        //2
        add_action( \'admin_menu\', array( $this, \'add_plugin_page\' ) );
        //6
        add_action( \'admin_init\', array( $this, \'page_init\' ) );
        add_action( \'publish_pelicula\', \'post_published_notification\', 10, 2 );
    }


    /**
     * Add options page
     */
    //3
    public function add_plugin_page()
    {
        // This page will be under "Settings"
        add_options_page(
            \'Settings Admin\', 
            \'My Settings\', 
            \'manage_options\', 
            \'my-setting-admin\',
            //4 
            array( $this, \'create_admin_page\' )
        );
    }

    /**
     * Options page callback
     */
    //5
    public function create_admin_page()
    {
        // Set class property
        $this->options = get_option( \'my_option_name\' );
        ?>
        <div class="wrap">
            <h1>My Settings</h1>
            <form method="post" action="options.php">
            <?php
                // This prints out all hidden setting fields
                settings_fields( \'my_option_group\' );
                do_settings_sections( \'my-setting-admin\' );
                submit_button();
            ?>
            </form>
        </div>
        <?php
    }

    /**
     * Register and add settings
     */
    //7
    public function page_init()
    {        
        register_setting(
            \'my_option_group\', // Option group
            \'my_option_name\', // Option name
            //8
            array( $this, \'sanitize\' ) // Sanitize
        );
        //10
        add_settings_section(
            \'setting_section_id\', // ID
            \'My Custom Settings\', // Title
            //11
            array( $this, \'print_section_info\' ), // Callback
            \'my-setting-admin\' // Page
        );  
        //13
        add_settings_field(
            \'title\', 
            \'Mails\',
            //14 
            array( $this, \'title_callback\' ), 
            \'my-setting-admin\',
            \'setting_section_id\'
        );      
    }

    /**
     * Sanitize each setting field as needed
     *
     * @param array $input Contains all settings fields as array keys
     */
    //9
    public function sanitize( $input )
    {
        $new_input = array();

        if( isset( $input[\'title\'] ) )
            $new_input[\'title\'] = sanitize_text_field( $input[\'title\'] );

        return $new_input;
    }

    /** 
     * Print the Section text
     */
    //12
    public function print_section_info()
    {
        print \'Enter your settings below:\';
    }

    /** 
     * Get the settings option array and print one of its values
     */
    //15
    public function title_callback()
    {
        printf(
            \'<input type="text" id="title" name="my_option_name[title]" value="%s" />\',
            isset( $this->options[\'title\'] ) ? esc_attr( $this->options[\'title\']) : \'\'

        );

        $maill=$this->options[\'title\'];
        //wp_mail( $maill, "wdaawddwwa", "Easy", "" );

    }

    public function post_published_notification( $ID, $post ) {
        $author = $post->post_author; /* Post author ID. */
        $name = get_the_author_meta( \'display_name\', $author );
        $email = get_the_author_meta( \'user_email\', $author );
        $title = $post->post_title;
        $permalink = get_permalink( $ID );
        $edit = get_edit_post_link( $ID, \'\' );
        $to[] = $this->options[\'title\'];
        $subject = sprintf( \'Published: %s\', $title );
        $message = sprintf (\'Congratulations, %s! Your article “%s” has been published.\' . "\\n\\n", $name, $title );
        $message .= sprintf( \'View: %s\', $permalink );
        $headers[] = \'\';
        var_dump("hola");
        wp_mail( $to, "wdwadwad", "dwwdawddw", "" );
    }



}
//16
$my_settings_page = new MySettingsPage();